I appreciate everyone's information. It helps greatly.
One of the reasons I was a little confused about the 360/390 series is the Ford Specifications. There's reference to the 360, the 390, and the 361 HD and 391 HD engines. The spec chart shows subtle differences for each engine, such as Bore & Stroke, valve sizes and spring pressures, and Head combustion chamber volumes. Not much, but just enough. Also, the 360-2v has 8.0:1 compression, and the 390-2v has 8.2:1 compression. However, they don't list a 390-4v for trucks, at all. Only the 391 HD came with 4bbl, with 7.2:1 compression.
Ford makes no mention of block casting numbers to differentiate between the 360/390 series and the 361HD/391HD engines. They use the Engine Identification Tag (You know, the pesky metal tag that always gets discarded?).
Also, the Ford Engine ID chart shows that the 360-2v (Code Y) came in the F-100/250/350 trucks only.
The 390-2v (Code H) was used in the same series trucks. The 361-2v (Code E) came in the 600/700/750 series trucks, and the 391-4v (Code F) came in the 750/800's.
I don't have an engine ID chart for passenger cars, only the 1972 Truck Service Manuals. I wanted to make sure that a 390-4v from and LTD, for example, would be rebuildable, and bolt into the F-250, with the same tranny splines.
To really confuse the issue: The Ford engine rebuild section has different sub-sections for the 330HD, 361 and 391 Engines, but I don't see any real difference between that and the 360/390's, as far as parts go.